Home / 782,426.92-1,079,674.48-621,671.08

Finding the Fourth Proportional to 782,426.92, 1,079,674.48 and 621,671.08

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Solution

The fourth proportional to 782,426.92, 1,079,674.48 and 621,671.08 is: 857,846.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,426.92 : 1,079,674.48 = 621,671.08 : x
  2. Step 2: Convert to fraction form
    782,426.92/1,079,674.48 = 621,671.08/x
  3. Step 3: Cross multiply
    782,426.92x = 1,079,674.48 × 621,671.08
  4. Step 4: Simplify right side
    782,426.92x = 671,202,400,030.04
  5. Step 5: Solve for x
    x = 671,202,400,030.04/782,426.92
  6. Step 6: Final answer
    x = 857,846.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.